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Analytical Chemistry
Page 5
Questions (747)
Suggest the identity of unknown compound. Melting point: 142-144C and proton NMR peaks of singlet at 1.25, doublet at 2.15,
1 answer
asked by
Mark
170 views
Explain the basis of Lowry method briefly ?
1 answer
asked by
SAMOUY
179 views
Who can help me out?
Explain how analytical chemistry studies relate to development issues and goals of the world?
1 answer
asked by
kelvin
345 views
What is maximum assay and minimum assay
2 answers
asked by
Acheampomaa
592 views
A 2.685 g sample of KHC8H4O4 was dissolved in water and uses to standardize a NaOH solution. The endpoint was reached after
2 answers
asked by
Rebecca
1,513 views
Three unknown solutions were prepared by pipetting 15.00 mL of an unknown nickel solution into a 200.00 mL volumetric flask and
2 answers
asked by
Christine
581 views
Why do we see pteridines but not ommochromes on a TLC plate?
3 answers
asked by
MJ
943 views
from a group of samples tested, is it true that the highest rf is the first the be eluted? If so, why is that?
1 answer
asked by
mikey
297 views
Select the correct order of the GC components
Column, Recorder, Carrier Gas, Flow Controller, Detector Recorder, Carrier Gas,
2 answers
asked by
Ann
913 views
1. If the unknown solid were not dried before analysis, would the calculated percent of KHP be too high or too low? Explain
1 answer
asked by
Mia
422 views
Help please. Am doing a past exam paper and I hit a road block with this question:
Chloride in a brine solution is determined by
1 answer
asked by
Bell
505 views
How to calculate dimensional analysis using the density and molarity to calculate the percent (w/w)???
2 answers
asked by
Barbie
519 views
I'm using chromatography to identify compounds in a leaf extract for a lab, and one of the evaluation questions is 'Suggest a
2 answers
asked by
Justin
502 views
What factors affect the rate of travel of compounds in the Gas Chromatography column?
3 answers
asked by
Emma
619 views
How much mL of dilute nitric acid is needed to add in control solution in chloride limit test in sodium hydroxide sample???can u
5 answers
asked by
Palakpatel
410 views
I am having major issues with this problem and I no clue where to start. It also doesn't help that the professor never taught us
4 answers
asked by
Katie
603 views
A mineral sample is analyzed for its cobalt and calcium content. A sample is dissolved, and then the cobalt and calcium are
2 answers
asked by
P
1,146 views
an 0.5031 gram sample of iron ore is determined through redox titration using K2Cr2O7. The sample was dissolved in HCl and all
2 answers
asked by
Sam
700 views
I did a lab on the colorimetric determination of iron concentration and I'm not sure how to convert fe conc into ppm. For
4 answers
asked by
aly
509 views
A sample weighing 1.25 mg containing a certain compound M (FW 292.16 g/mol) was dissolved in
solvent in a 5.00 mL volumetric
2 answers
asked by
KAMBOYI K
602 views
When doing a titration, for example acid base, how do you know how much base to measure out and how much analyte to pour in the
1 answer
asked by
che
386 views
draw the complexation titration of 50ml of 0.1M MgCl2 with 0.2M EDTA(take aminimum of six point) kf=4.9*10^8?
1 answer
asked by
baynes
302 views
Determine the MAX amount of titrant you will possibly need for your titration.
Your unknown solution has been prepared by
2 answers
asked by
Abba
561 views
DrBob222, it is me again. Continue the question
5mL of a solution A (unknown concentration) was transferred into sic 25mL
2 answers
asked by
katy
613 views
5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard
5 answers
asked by
Katy
668 views
Any help/advice on answering this question would be a big help! :)
The analysis of lead (Pb) in a sample of solder was carried
3 answers
asked by
Chris
448 views
I posted a response to that potentiometric analysis problem but it's pretty far down the list. Let me know if you can't find it
1 answer
asked by
DrBob222
363 views
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A
1 answer
asked by
teresmajor16
590 views
I have 4 ml of eluent from SPE and I brought the volume up to 5 ml using the solvent. The eluent was ran in UV for Quant
4 answers
asked by
Anonymous
321 views
Determine the molarity of standard sodium oxalate
1 answer
asked by
supanpreet
360 views
From the following data ,calculate the percentage of KCl in sample of chloride weight of the sample 0.1865, volume of AgNOS
3 answers
asked by
NELLY
424 views
The thickness of a pure Ag plate on a base metal is to be determined by controlled potential coulometry. The metal sheet is
2 answers
asked by
James
527 views
Calculate the pH of aqueous solution 0.0000019 M KOH
1 answer
asked by
David Allen
370 views
why after added KMnO4 change colored and after that change color KMno4? in Determination of Chloride Ion Concentration by
2 answers
asked by
zagros
560 views
how can analytical chemistry help on different fields of sciences and technology?
1 answer
asked by
Ella
366 views
What can account for differences in the calculated value of a drug concentration in a sample as determined by standard curve
3 answers
asked by
Anonymous
565 views
How do I Calculate the concentration of iron(lll) with absorbance measurement. Wavelength is 480nm, solution is 1 ml FeCl3 : 9ml
4 answers
asked by
Hannah
702 views
How do you find the Mass of Vitamin C in tablet?
we did Redox Titration (Determination of ascorbic acid by Iodometric
1 answer
asked by
Malik
837 views
why phenolphthalein is added first then methyl orange in alkali mixtur titration
1 answer
asked by
jiya
674 views
In most cases with GLC the area under the peak as a % of the total area for all peaks is interpreted as representing the % mass
1 answer
asked by
Kayla
322 views
In most cases with GLC the area under the peak as a % of the total area for all peaks is interpreted as representing the % mass
1 answer
asked by
Anonymous
397 views
You are carryingout TLC on normal phase plates. Compound A has an Rf of 0.4 and compound B of 0.6. What would happen to the Rf
1 answer
asked by
Bailey
503 views
what other compounds may be present at the trace level that would interfere with this titration? (EDTA)
1 answer
asked by
Janu
342 views
we are doing complexometric titration for the data sheet it askes to find mass of CaCO3 in sample how do I find it ?
1 answer
asked by
Hurine
339 views
Experiment: Redox titration;determination of ascorbic acid by an iodometric back-titration
Why is sodium carbonate added to the
2 answers
asked by
Jennifer
612 views
How much titrant will be required if your EDTA titrant is exactly 0.01 M and you weighed out exactly 0.4 g calcium carbonate?
1 answer
asked by
Jesica
435 views
why is NaOH a poor primary standard ?
2 answers
asked by
Noor
609 views
salam....
plz give me some sources of error of determining concentration quotient of FeSCN? plzz urgent
3 answers
asked by
hamza
554 views
y question is about Determination of Iodine Value in Fats & Oils experiment. I can't seem to get the right IV for coconut oil
1 answer
asked by
Summer
414 views
Cu+ reacts with neocuproine to form the coloured complex (neocuproine)2Cu+, with an absorption maximum at 454 nm. Neocuproine is
3 answers
asked by
panchi
1,366 views
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